Singer Kim Bum Soo recently received a warm welcome at the immigration office on his way into the U.S. thank to his friendship with�Psy.

Kim Bum Soo tweeted to Psy recently, "[Psy] hyung.. Are you in the U.S. right now?!.. Because of you hyung I became a star when I was screened by immigrations.. I told them you were my friend and they all went wild wild!! kekeke.. Hyung you are definitely world style~~!! kekeke"

In other news, Kim Bum Soo will perform at New York City's Carnegie Hall for his upcoming '2012 KIM BUM SOO GET ALRIGHT SHOW WITH ORCHESTRA' solo concert before moving onto perform in Atlanta,�Las Vegas, and other cities.

Source + image: DongA Ilbo via Nate